<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>flex布局-行对齐方式</title>
</head>
<style>
  .box {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;

    /* 调整对齐方式：对单行弹性盒子不生效 */
    /* align-content: flex-start; */
    /* align-content: flex-end; */

    /* align-content: center; */

    /* align-content: space-between; */
    /* align-content: space-around; */

    align-content: space-evenly;

    height: 400px;
    border: 1px solid #000;
  }

  .box div {
    width: 200px;
    height: 100px;
    background-color: pink;
  }
</style>

<body>
  <div class="box">
    <div>1</div>
    <div>2</div>
    <div>3</div>
    <div>4</div>
    <div>5</div>
    <div>6</div>
    <div>7</div>
    <div>8</div>
  </div>
</body>

</html>